Isomerizational and conformational study of methyl-2-cyano-3-methoxyacrylate and methyl-2-cyano-3-aminoacrylate and its N-methyl derivatives
作者:A. Gatial、H. Juhásová、M. Gróf、J. Kožíšek、V. Milata、N. Prónayová、P. Matějka
DOI:10.1016/j.molstruc.2010.11.043
日期:2011.5
vibrational and NMR spectroscopy and theoretically by the ab initio calculations at MP2 level in 6-311++G** basis set. The IR and Raman spectra of all compounds as a solid and solute in various solvents have been recorded in the region 4000–50 cm−1. The NMR spectra were obtained in chloroform, acetonitrile and DMSO at room temperature. Because both electron-withdrawing groups are different, all studied
摘要 四种推拉化合物的异构体和构象异构体:2-氰基-3-甲氧基丙烯酸甲酯 (MCMA) H3C O CH C(CN)(COOCH3)、2-氰基-3-氨基丙烯酸甲酯 (MCAA) H2N CH C (CN)(COOCH3)、2-氰基-3-甲基氨基丙烯酸甲酯 (MCMAA) H3C NH CH C(CN)(COOCH3) 和 2-氰基-3-二甲基氨基丙烯酸甲酯 (MCDMAA) (H3C)2N CH C(CN) )(COOCH3) 已经通过振动和核磁共振光谱进行了实验研究,并在 6-311++G** 基组中通过 MP2 水平的 ab initio 计算进行了理论上的研究。在 4000-50 cm-1 区域内记录了所有化合物作为固体和各种溶剂中的溶质的 IR 和拉曼光谱。在室温下在氯仿、乙腈和 DMSO 中获得 NMR 谱。因为两个吸电子基团不同,所有研究的化合物都可以作为 E 和 Z 异构体存